Means for charging pneumatic tires with dust-laden air



E. R. DRAVER.

MEANS FOR CHARGING PNEUMATIC TIRES WITH DUST LADEN AIR. AvPLlcATloN manFEB. 15. 1921.

1,41 1,424. Patented Apr. 4, 1922.

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EMIL a. nuevas, or RrcHMoNn, rumana.

MEANS roitcuaneme Prieur/tarro 'rinus WITH DUsnLAnEN AIR.

To all Lu/wm t may conce/rfa:

Be it known that l, EMIL R. Duiven, a citizen of the United States,residing at Richmond, in the county ot Wayne and YState of Indiana, haveinvented certain new and .useful Improvements in Means for Charging`.Pnemnatic ,Tires withl Dust-Laden Air; and I rdo hereby declare thefollowing to be a tull, clear, and exact description otflthe invention,such-as will enable others skilled in the art to which is appertains tomake and use the same.

This invention relates to an apparatus tor .charging a quantity of drypowdered material into a pneumatic tire along with the air charged intothe same.` It is well known that'it has been heretofore impossible toprevent slow leakage from charged pneumatic tires even when the same arenew and apparently in perfect condition. lt' has' thus been necessary torecharge tires .at rather frequent intervals.

The applicant has invented a novel method by whichthis small leakage yinan apparently perfect tire is prevented. vAccording to the said method.ya small quantity ot dry powdered material is4 placed in the tire and theapparatus.o'l1 this invention is tor the purpose oli conveniently andetliciently introducing saidpowdered substance into the tire.-

It is an objectl ott this invention theretorc 4to, provide a simple andconvenient means by which the desired quantity ot dry powdered substancemay be quickly and efciently placed in the tire. This together with theother objects and advantages ot the `invention will be apparent .fromthe 'tollowing description made in connection with the accompanyingdrawings, in which- Fig. 1 is for the most part a vertical section of anapparatus for the purpose described; and

Fig. 2 is ayiew in side elevation .of the lmodified form of apparatus,a. part thereoiZ being shown in section.

Referring to the drawings;

y The device comprises a base member 1 having a laterally projectingflange portion 1"L 'to which base member is secured by means o' screwthreads or other suitable means, a thin metal casing Q of cylindrical'torni which has suitably secured to its upper end by screw threads orother means a cap member 3, which is provided with a laterally extendinglug 3a. A biconical container having its Specification of LettersFatent.

Application filed February 15, 15521.

Patented Apr. 4, 1922.

Serial No. 445,082.

wide diameter relatively near the top portion thereot is disposed in thecasing 2 and provided at its upper end with a comparatively small outlettube 5, which projects through the cap 3 and is screw threaded at itsouter end or otherwise formed to afford convenient means for theattachment of a tube or hose G having" a knurled connecting` member 7 otany ordinary form connected thereto. The

other end ot the tube 6 is shown as provided -with the usual screwconnection adapted to engage Vin the valve stem of a tire, which stem isillustrated as 8 and which 1s connected in ythe usual and ordina-rymanner to an inner tube oi Aa tire 9. rThe container 4l is also profided at its lower end with a comparatively small tube 10, which )asseslaterally through the casing f2 near tlie bottom thereof and thenupwardly along the side of said casing and through the lug 3 of the capmember .3 and is formed with screw threadsatits upper portion toconveniently receive the Iconnection 11 olf a hose or tube 12 adapted toextend to a compressed air tank or other suitable air supply. A tube 13of considerably larger dimension than the tubes and 1() extends i'romthe side of the upper por tion ot the container it, upwardly to `andthrough the cap portion 3, the latter being termed with a threadedproject-ion surround- .ing the opening communicating with the tube 13,which projection is adapted to receive a knurled closing cap 14. A ilapvalve member 15 is 4pivoted at its upper side near the upper edge of theopening into tube 13 and adapted to swing loosely on said pivot and tomove into a position to close the openfing into the tube L13.

ln using the 'device described, a small Vquantity ot the dry powderedsubstance will be ,introduced into the container 4 by relmovmgcap 14 anddropping the substance through the top 13. The material will .readilydrop past the valve 15 and tall into the lower partei the container tand onto Y cated by the arrows therein. Then the air is turned on, thesame will tend to close the valve l5 so that the powdered substance willbe prevented from being blown into the tube 13. A desired amount ofpowdered substance can thus be quickly and conveniently charged into thetire by the use of the device.

In Fig. 2, a -device for introducing theV powdered substance into a tireis shown applied to a tire pump adapted'to be operated by hand. Thispump comp-rises the usual base member 1` and the cap member 3', whichlatter is provided with a laterally extending portion 3b. The usual pumpcylinder 2 extends between the basel member l and the cap 3 and aplunger member 16 carried by a plunger rod 17 Y having the handle 18` atthe outer end thereof is also provided. The pump cylinder 2 is providedwith the usual outlet portion 1 9 adapted to receive the tube 6 `whichlike the tube 6 shown in Fig. 1 will be equipped with the usualconnections adapted to be attached to the tire valve. The air inlet ofthe pump is through a member 20. which is provided with a ballcheck'valve adapted to permit air to pass into the cylinder 2', butwhich will prevent the passage of airtherefrom. A member 2l of generalcylindrical shape but having a tapered lower end terminating `in anupwardly curved tube portion 21 is provided and 'adapted to be disposedbelow and secured to the extension 3b and a tube 22 extends from themember 20 upwardly along the side of the casing 2 and opens into themember 21 near the top thereof. The portion 3b is provided with anopening aligned with the opening in the member, 2l, which opening isarranged to be closed by closing cap 22 threaded thereinto,

The operation of this device is as follows: A desired amount of drypowdered substance will be placed in the container 2l and the cap 22positioned to close the upper end thereof, the tube 6 being connected toa tire and the pump operated by handle 18. The air willbe drawn inthrough the tube 21 as indicated by the arrow and will pass upwardlythrough the powdered substance in container 2l and commingled therewithand carry the same through the tube 22 into the pump casing 2 fromwhence it will be discharged into the tire through the tube 6.

A desiredamount ofpowdered substance can thus be quickly `andconveniently charged `into the tire.

From `the above description it is seen that `applicant has provided twoconvenient forms of, apparatus by means of which the dry powderedsubstance can be' quickly introduced into the tire by either a constantsupplyof air or by means of the usual hand pump.

It will, of course, be understood that only a small quantity of thesubstance is used,

having in combination a container, a conduit which quantity will beeasily mixed withV the air and carried thereby into the tube.

The parts described can be made of any desired material, which is foundconvenient in practice and it will, of course, be understood thatvarious changes in the form, details and proportions of the device canbe made without departing from the scope of the applicants invention,which generally stated consists in the matter shown and described andset forth in the appended claims.

lVhat is claimed is:

1. An apparatus for introducing a dry powdered substance into a tirewithjthe air,

leading from one part thereof through which air is adapted to pass tothe tire and s, oonduit communicating with another part thereof throughwhich air is adapted to enter Said container, said container having anopening thereinto through'which the powdered substance can beintroduced.V Y

2. An apparatus of the character described, comprising a containerhaving a tapered lower portion terminating in a tube through which airis adapted to pass into the container, a conduit leading from the upperend of said container and having means connected therewith through whichair is adapted to pass to a tire, said container havin an 95 opening atits upper portion through W ich material can be introduced therelnto andmeans for closing said opening.

3. An apparatus of the characterA de# scribed, comprising a casing, amember disposed therein adapted to receive a dry powdered substance,said member converging at its upper end and `terminating 1n a tubeextendingthrough the topy of said casing, and said member converging atits lower end and terminating in a tube extending laterally through saidcasing near the bottom thereof, and said member having a conduitextending from its upper portion through the top of said casing and a 11closure for said conduit, said first mentioned tube being adapted to beconnected with an automobile tire and said second mentioned tube beingadapted and connected to an air supply.

4. An ,apparatus of theV character,` described, comprising a casing', abiconical container member disposed therein, a tube leading from theupper portion of said .container extending through the top of saidcasing and 120 adapted to be connected to an automobile tire valve, atube extendin from the lower end of said container outsi e of saidcasing and upwardly along the side thereof and adapted to be connectedto an air supply, a conduit 125 leading from the upper portion of saidcontainer through the top of said casing, a closure for said conduit anda valve member disposed in said casing at theend of said conduit andadapted to close the same.

5. An apparatus of the class described, comprising a base member havinga laterally projecting flange and cylindrical casing extending upwardlytherefrom, and a cap member secured to the upper end of said casing, acontainer member disposed in Said casing and having a tube leading fromits upper end, extending through said cap member, adapted to beconnected to a tire valve, a tube extending from the lower end of saidcontainer through the casing upwardly along the side ot' the same andthrough the cap member and adapted to be connected to an air supply, aconduit connected to the upper end of the container and extendingupwardly through the cap mem-ber, a valve in the lower end of saidconduit and a closure member for the upper end thereof.

6. An apparatus for introducing a dry powdered substance into a tirewith the air, having in combination, a. container adapted to receive aquantity of the dry powdered substance,' a conduit leading from the topof said container through which air is adapted to pass to the tire fromthe container and another conduit communicating with the containerthrough which air is adapted to enter EMIL R. DRAVER.

